Simulating the Antarctic ice sheet in the late-Pliocene warm period: PLISMIP-ANT, an ice-sheet model intercomparison project
In the context of future climate change, understanding the nature and behaviour of ice sheets during warm intervals in Earth history is of fundamental importance. The late Pliocene warm period (also known as the PRISM interval: 3.264 to 3.025 million years before present) can serve as a potential an...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
European Geosciences Union
2015
|
Subjects: | |
Online Access: | https://eprints.whiterose.ac.uk/85694/ https://eprints.whiterose.ac.uk/85694/1/tc-2014-165-manuscript-version4.pdf https://doi.org/10.5194/tc-9-881-2015 |
id |
ftleedsuniv:oai:eprints.whiterose.ac.uk:85694 |
---|---|
record_format |
openpolar |
spelling |
ftleedsuniv:oai:eprints.whiterose.ac.uk:85694 2023-05-15T13:41:05+02:00 Simulating the Antarctic ice sheet in the late-Pliocene warm period: PLISMIP-ANT, an ice-sheet model intercomparison project de Boer, B Dolan, AM Bernales, J Gasson, E Golledge, NR Sutter, J Huybrechts, P Lohmann, G Rogozhina, I Abe-Ouchi, A Saito, F van de Wal, RSW 2015-05-06 text https://eprints.whiterose.ac.uk/85694/ https://eprints.whiterose.ac.uk/85694/1/tc-2014-165-manuscript-version4.pdf https://doi.org/10.5194/tc-9-881-2015 en eng European Geosciences Union https://eprints.whiterose.ac.uk/85694/1/tc-2014-165-manuscript-version4.pdf de Boer, B, Dolan, AM, Bernales, J et al. (9 more authors) (2015) Simulating the Antarctic ice sheet in the late-Pliocene warm period: PLISMIP-ANT, an ice-sheet model intercomparison project. The Cryosphere, 9. 881 - 903. ISSN 1994-0416 Article PeerReviewed 2015 ftleedsuniv https://doi.org/10.5194/tc-9-881-2015 2023-01-30T21:32:22Z In the context of future climate change, understanding the nature and behaviour of ice sheets during warm intervals in Earth history is of fundamental importance. The late Pliocene warm period (also known as the PRISM interval: 3.264 to 3.025 million years before present) can serve as a potential analogue for projected future climates. Although Pliocene ice locations and extents are still poorly constrained, a significant contribution to sea-level rise should be expected from both the Greenland ice sheet and the West and East Antarctic ice sheets based on palaeo sea-level reconstructions. Here, we present results from simulations of the Antarctic ice sheet by means of an international Pliocene Ice Sheet Modeling Intercomparison Project (PLISMIP-ANT). For the experiments, ice-sheet models including the shallow ice and shelf approximations have been used to simulate the complete Antarctic domain (including grounded and floating ice). We compare the performance of six existing numerical ice-sheet models in simulating modern control and Pliocene ice sheets by a suite of five sensitivity experiments. We include an overview of the different ice-sheet models used and how specific model configurations influence the resulting Pliocene Antarctic ice sheet. The six ice-sheet models simulate a comparable present-day ice sheet, considering the models are set up with their own parameter settings. For the Pliocene, the results demonstrate the difficulty of all six models used here to simulate a significant retreat or re-advance of the East Antarctic ice grounding line, which is thought to have happened during the Pliocene for the Wilkes and Aurora basins. The specific sea-level contribution of the Antarctic ice sheet at this point cannot be conclusively determined, whereas improved grounding line physics could be essential for a correct representation of the migration of the grounding-line of the Antarctic ice sheet during the Pliocene. Article in Journal/Newspaper Antarc* Antarctic Greenland Ice Sheet The Cryosphere White Rose Research Online (Universities of Leeds, Sheffield & York) Antarctic The Antarctic Greenland The Cryosphere 9 3 881 903 |
institution |
Open Polar |
collection |
White Rose Research Online (Universities of Leeds, Sheffield & York) |
op_collection_id |
ftleedsuniv |
language |
English |
description |
In the context of future climate change, understanding the nature and behaviour of ice sheets during warm intervals in Earth history is of fundamental importance. The late Pliocene warm period (also known as the PRISM interval: 3.264 to 3.025 million years before present) can serve as a potential analogue for projected future climates. Although Pliocene ice locations and extents are still poorly constrained, a significant contribution to sea-level rise should be expected from both the Greenland ice sheet and the West and East Antarctic ice sheets based on palaeo sea-level reconstructions. Here, we present results from simulations of the Antarctic ice sheet by means of an international Pliocene Ice Sheet Modeling Intercomparison Project (PLISMIP-ANT). For the experiments, ice-sheet models including the shallow ice and shelf approximations have been used to simulate the complete Antarctic domain (including grounded and floating ice). We compare the performance of six existing numerical ice-sheet models in simulating modern control and Pliocene ice sheets by a suite of five sensitivity experiments. We include an overview of the different ice-sheet models used and how specific model configurations influence the resulting Pliocene Antarctic ice sheet. The six ice-sheet models simulate a comparable present-day ice sheet, considering the models are set up with their own parameter settings. For the Pliocene, the results demonstrate the difficulty of all six models used here to simulate a significant retreat or re-advance of the East Antarctic ice grounding line, which is thought to have happened during the Pliocene for the Wilkes and Aurora basins. The specific sea-level contribution of the Antarctic ice sheet at this point cannot be conclusively determined, whereas improved grounding line physics could be essential for a correct representation of the migration of the grounding-line of the Antarctic ice sheet during the Pliocene. |
format |
Article in Journal/Newspaper |
author |
de Boer, B Dolan, AM Bernales, J Gasson, E Golledge, NR Sutter, J Huybrechts, P Lohmann, G Rogozhina, I Abe-Ouchi, A Saito, F van de Wal, RSW |
spellingShingle |
de Boer, B Dolan, AM Bernales, J Gasson, E Golledge, NR Sutter, J Huybrechts, P Lohmann, G Rogozhina, I Abe-Ouchi, A Saito, F van de Wal, RSW Simulating the Antarctic ice sheet in the late-Pliocene warm period: PLISMIP-ANT, an ice-sheet model intercomparison project |
author_facet |
de Boer, B Dolan, AM Bernales, J Gasson, E Golledge, NR Sutter, J Huybrechts, P Lohmann, G Rogozhina, I Abe-Ouchi, A Saito, F van de Wal, RSW |
author_sort |
de Boer, B |
title |
Simulating the Antarctic ice sheet in the late-Pliocene warm period: PLISMIP-ANT, an ice-sheet model intercomparison project |
title_short |
Simulating the Antarctic ice sheet in the late-Pliocene warm period: PLISMIP-ANT, an ice-sheet model intercomparison project |
title_full |
Simulating the Antarctic ice sheet in the late-Pliocene warm period: PLISMIP-ANT, an ice-sheet model intercomparison project |
title_fullStr |
Simulating the Antarctic ice sheet in the late-Pliocene warm period: PLISMIP-ANT, an ice-sheet model intercomparison project |
title_full_unstemmed |
Simulating the Antarctic ice sheet in the late-Pliocene warm period: PLISMIP-ANT, an ice-sheet model intercomparison project |
title_sort |
simulating the antarctic ice sheet in the late-pliocene warm period: plismip-ant, an ice-sheet model intercomparison project |
publisher |
European Geosciences Union |
publishDate |
2015 |
url |
https://eprints.whiterose.ac.uk/85694/ https://eprints.whiterose.ac.uk/85694/1/tc-2014-165-manuscript-version4.pdf https://doi.org/10.5194/tc-9-881-2015 |
geographic |
Antarctic The Antarctic Greenland |
geographic_facet |
Antarctic The Antarctic Greenland |
genre |
Antarc* Antarctic Greenland Ice Sheet The Cryosphere |
genre_facet |
Antarc* Antarctic Greenland Ice Sheet The Cryosphere |
op_relation |
https://eprints.whiterose.ac.uk/85694/1/tc-2014-165-manuscript-version4.pdf de Boer, B, Dolan, AM, Bernales, J et al. (9 more authors) (2015) Simulating the Antarctic ice sheet in the late-Pliocene warm period: PLISMIP-ANT, an ice-sheet model intercomparison project. The Cryosphere, 9. 881 - 903. ISSN 1994-0416 |
op_doi |
https://doi.org/10.5194/tc-9-881-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
3 |
container_start_page |
881 |
op_container_end_page |
903 |
_version_ |
1766145495281958912 |